Method and system for superheating steam
OwnerBenjamin Campbell Steinhausinventor
Life of this patent
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Abstract
A method and system for recovering heat in a gasifier are provided. The gasifier includes a pressure vessel including a substantially cylindrical shell, an upper head, and a lower head. The gasifier also includes a refractory wall substantially concentric with the shell and spaced apart radially inwardly from the shell, and a superheater heat exchanger mounted between the shell and the refractory wall.
Claims20
A gasifier comprising:
- a pressure vessel comprising a substantially cylindrical shell, an upper head, and a lower head;
- a refractory wall substantially concentric with said shell and spaced apart radially inwardly from said shell;
- and
- a superheater heat exchanger mounted between said shell and said refractory wall.
A method of heat recovery in a gasifier having a combustion zone surrounded by a wall of refractory, a shell of a pressure vessel surrounding the wall of refractory, and a heat exchanger, said method comprising:
- providing the heat exchanger in an annular space between the wall of refractory and shell;
- receiving a flow of saturated steam at an inlet of the heat exchanger;
- receiving a flow of heat from the combustion zone, by the saturated steam such that the steam is superheated;
- and
- transmitting the heat from the heat exchanger using the superheated steam.
A gasification system comprising:
- a gasifier having a substantially cylindrical shell, an upper head, and a lower head;
- a combustor within said gasifier, said combustor configured to direct products of combustion to an outlet passage of said gasifier;
- a fuel injection system configured to inject a fuel into said combustor;
- a refractory wall substantially concentric with said shell and spaced apart radially inwardly from said shell;
- and
- a superheater heat exchanger between said shell and said refractory wall.
Dependencies are inferred from the claim text.